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GNU/Linux |
CentOS 5.1 |
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speaker-test(1) |
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speaker−test − command-line speaker test tone generator for ALSA
speaker−test [−options]
speaker−test generates a tone that can be used to test the speakers of a computer.
−c | −−channels NUM
NUM channels in stream
−D | −−device NAME
PCM device name NAME
−f | −−frequency FREQ
sine wave of FREQ Hz
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−−help |
Print usage help |
−b | −−buffer TIME
Use buffer size of TIME microseconds. When 0 is given, use the maximal buffer size. The default value is 0.
−p | −−period TIME
Use period size of TIME microseconds. When 0 is given, the periods given by −P option is used. The default value is 0.
−P | −−nperiods ERIODS
Use number of periods. The default value is 4.
−r | −−rate RATE
stream of RATE Hz
−t | −−test pink|sine|wav
−t pink means use pink noise (default).
Pink noise is perceptually uniform noise -- that is, it sounds like every frequency at once. If you can hear any tone it may indicate resonances in your speaker system or room.
−t sine means to use sine wave.
−t wav means to play WAV files, either pre-defined files or given via −w option.
You can pass the number from 1 to 3 as a backward compatibility.
−l | −−nloops COUNT
Specifies the number of loops. Zero means to run infinitely.
When −s option below with a valid channel is given, speaker−test will perform always a single-shot without looping.
−s | −−speaker CHANNEL
Do a single-shot speaker test for the given channel. The channel number starts from 1. The channel number corresponds to left, right, rear-left, rear-right, center, LFE, side-left, side-right, and so on.
For example, when 1 is passed, it tests the left channel only once rather than both channels with looping.
−w | −−wavfile
Use the given WAV file for the playback instead of pre-defined WAV files.
−W | −−wavdir
Specify the directory containing WAV files for playback. The default path is /usr/share/sounds/alsa.
Produce stereo sound from one stereo jack:
speaker-test -Dplug:front -c2
Produce 4 speaker sound from two stereo jacks:
speaker-test -Dplug:surround40 -c4
Produce 5.1 speaker sound from three stereo jacks:
speaker-test -Dplug:surround51 -c6
To send a nice low 75Hz tone to the Woofer and then exit without touching any other speakers:
speaker-test -Dplug:surround51 -c6 -s1 -f75
The speaker-test program was written by James Courtier-Dutton. Pink noise support was added by Nathan Hurst. Further extensions by Takashi Iwai.
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speaker-test(1) | |